anandsunderraman

                               Lesson 1 SUMMARY


  1. The cursor is moved using either the arrow keys or the hjkl keys.
         h (left)       j (down)       k (up)       l (right)

  2. To start Vim from the shell prompt type:  vim FILENAME <ENTER>

  3. To exit Vim type:     <ESC>   :q!   <ENTER>  to trash all changes.
             OR type:      <ESC>   :wq   <ENTER>  to save the changes.

anandsunderraman

GNU Make Cheatsheet

Based on https://www.gnu.org/software/make/manual/html_node/Quick-Reference.html

Directives

Directive	Description
define variable define variable = define variable := define variable ::= define variable += define variable ?= endef	Define multi-line variables.
undefine variable	Undefining variables.

anandsunderraman

{
    "$defs":
    {
        "MapStringToString":
        {
            "type": "object",
            "additionalProperties":
            {
                "type": "string"
            }

anandsunderraman

Splunk Queries

I really don't like Splunk documentation. Why is it so hard to find out how to do a certain action? So this is a cheatsheet that I constructed to help me quickly gain knowledge that I need.

Analysis

Events over time

index="my_log"

anandsunderraman

package main

import (
	"bytes"
	"fmt"
	"github.com/fullstorydev/grpcurl"
	"golang.org/x/net/context"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/credentials"

anandsunderraman

Add Git Branch Name to Terminal Prompt (Linux/Mac)

Open ~/.bash_profile in your favorite editor and add the following content to the bottom.

# Git branch in prompt.

parse_git_branch() {

anandsunderraman

{
  "format": "graph-model",
  "generatedBy": "2.3.0",
  "convertedBy": "TensorFlow.js Converter v2.4.0",
  "userDefinedMetadata": {
    "signature": {
      "inputs": {
        "input_tensor:0": {
          "name": "input_tensor:0",
          "dtype": "DT_UINT8",

anandsunderraman

version: '3'

services:
  elastic:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.6.0
    ports:
      - "9200:9200"
      - "9300:9300"
    environment:
      - discovery.type=single-node

anandsunderraman

'use strict';

const winston = require('winston');
const MESSAGE = Symbol.for('message');

const jsonFormatter = (logEntry) => {
    const base = { timestamp: new Date() };
    const json = Object.assign(base, logEntry)
    logEntry[MESSAGE] = JSON.stringify(json);
    return logEntry;

anandsunderraman

const MongoClient = require('mongodb').MongoClient;
let s3Client = require('aws-sdk/clients/s3');


//brute force method loading all the data into an array
exports.copyData = async (event, context) => {
  
  //this is required for node js mongodb connection pooling
  context.callbackWaitsForEmptyEventLoop = false;